1. G. Herglotz, inGesammelte Schriften, edited by Hans Schwerdtfeger (Vandenhoeck & Ruprecht, Göttingen 1979).
2. G. Herglotz, Berührungstransformationen, Lectures at the University of Göttingen, Göttingen, 1930.
3. R. Guenther, A. Gottsch, and C. Guenther,The Herglotz Lectures on Contact Transformations and Hamiltonian Systems(Juliusz Center for Nonlinear Studies, 1996).
4. K. Furta, A. Sano, and D. Atherton,State Variable Methods in Automatic Control(Wiley, New York, 1988).